Long-term patterns in growth of Oneida Lake walleye: a multivariate and stage-explicit approach for applying the von Bertalanffy growth function

Authored by JX He, LG Rudstam, JL Forney, AJ VanDeValk, DJ Stewart

Date Published: 2005

DOI: 10.1111/j.1095-8649.2005.00696.x

Sponsors: United States National Oceanic and Atmospheric Administration (NOAA) National Science and Engineering Research Council of Canada (NSERC)

Platforms: No platforms listed

Model Documentation: Other Narrative Mathematical description

Model Code URLs: Model code not found

Abstract

length (L-T) and its inter annual variation of walleye Sander vitreus from Oneida Lake. New York, based on 51 years (1950-2000) of data for ages 1 to 7 years were analysed. Growth increased over time at young ages, did not change at intermediate ages and decreased at old ages. Total length at age increased over time to age 4 or 5 years, but was stable at older ages. Principle component analysis was used to study the pattern of variations in annual L-T increments among years. More than 92 and 91\% of inter annual variability in growth was described by the first three principal components for males and females, respectively. The first principal component was a general indicator of annual growth at all ages, but was dominated by annual growth at intermediate ages. The second and third principal components represented contrasts among yearling L-T, yearling growth and growth at older ages. Therefore, changes in the three stage-specific parameters, yearling L-T, yearling growth and asymptotic L-T, explained most of the variance in observed growth. Using these three stage-specific parameters for the von Bertalanffy growth function facilitated interpretations of growth comparisons. (c) 2005 The Fisheries Society of the British Isles.

Tags

Population-dynamics Fish Parameters Reproduction Individual-based model Stizostedion-vitreum-vitreum Mussels dreissena-polymorpha New-york Yellow perch Perch perca-flavescens